I recommend Galaxy App Booster which is made by Samsung, its not available here in the Philippines but you can download on Apkmirror and also requires Good Lock app which is also not available but there is alternative launcher for that which is NiceLock, available on the Play Store.
Also, make sure to restart your phone a week or daily to get rid of the RAM caches and it improve the speed of your phone while starting fresh. 😄
In battery and device care under settings, there is an option to automate restarting the phone. I set mine to restart once a week at 3 am while I'm asleep. There is also a widget which optimizes the phone. Those are the ones I use.
